MHV-HD600/37.5-S Horizontal Top-Pressure Valve Test Bench

product introduction

The MHV-HD600/37.5-S Horizontal Top-Press Valve Test Bench is a dedicated valve pressure testing machine designed for hydrostatic shell strength testing, high-pressure sealing tests, and low-pressure gas tightness inspection of larger valves in the DN150–DN600 range. It is built as a high-capacity horizontal test station for workshop and inspection environments where stable clamping, controlled pressurization, and repeatable test procedures are required.

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Product Description

The MHV-HD600/37.5-S integrates a complete valve testing station layout, combining the hydraulic system, electrical control system, high/low pressure water supply system, fixtures, and a horizontal top-press clamping mechanism into one unit.

The bench adopts a horizontal top-press structure, where the top-press cylinder provides stable axial pressing to ensure reliable positioning during pressurization. The sealing between the valve and blind plate uses end-face O-ring sealing, supporting workshop sealing requirements for strength and tightness verification.

In operation, the high-pressure water pump is driven by an 8 bar pneumatic system and works with the electrical directional valve for reciprocating operation, continuously supplying pressure to the tested valve through check-valve switching.

MHV-HD600/37.5-S Horizontal Top-Pressure Valve Test Bench

Category	Item	Specification
General	Product Type	Horizontal Top-Press Valve Test Bench
General	Model	MHV-HD600/37.5-S
General	Valve Size Range	DN150–DN600 (150–600 mm)
Sealing	Valve–Blind Plate Sealing	End-face O-ring sealing
Test Medium	Hydrostatic Test Medium	Water
Test Medium	Low-Pressure Tightness Condition	4–7 bar (air or nitrogen)
Test Items	Test Scope	1.5× PN shell strength test; 1.1× PN high-pressure sealing test; 4–7 bar low-pressure gas tightness test
Mechanical	Tested Valve Face-to-Face Length	432–1143 mm
Mechanical	Sealing Disc Spacing Range	400–1250 mm
Mechanical	Pull Rod Inner Travel	1050 mm
Cylinder	Top-Press Cylinder	Ø380 mm
Clamping	Max Clamping Force	320 tons

Nominal Diameter	Nominal Pressure	Test Pressure
DN150	6.4–25.0 MPa	6.4–37.5 MPa
DN200	4.0–25.0 MPa	4.0–37.5 MPa
DN250	2.5–25.0 MPa	2.5–37.5 MPa
DN300	1.6–16.0 MPa	1.6–24.0 MPa
DN350	1.6–10.0 MPa	1.6–15.0 MPa
DN400	1.6–10.0 MPa	1.6–15.0 MPa
DN450	1.6–6.4 MPa	1.6–9.6 MPa
DN500	1.6–5.0 MPa	1.6–7.5 MPa
DN600	1.6–5.0 MPa	1.6–7.5 MPa

Product Features and Functions

Horizontal top-press clamping design suitable for DN150–DN600 valve pressure testing
End-face O-ring sealing between valve and blind plate

Supports complete inspection workflow:

Hydrostatic shell strength test (1.5× PN)
High-pressure sealing test (1.1× PN)
Low-pressure gas tightness test at 4–7 bar

High clamping capacity (320 tons) to secure large valves during pressurization
Broad mechanical adaptability with valve length coverage 432–1143 mm
High-pressure water pump driven by 8 bar pneumatic system with electrical directional valve for reciprocating operation and continuous pressure supply

Product Advantages

Heavy-duty capacity for large valve testing: DN150–DN600 with 320-ton clamping force support
Standardized test workflow coverage: strength + sealing + low-pressure tightness in one station
Practical sealing method: end-face O-ring sealing for workshop inspection use
Wide fixture travel and spacing range supports different valve sizes without frequent re-fixturing
Stable pressure supply principle (pneumatic-driven high-pressure pump + directional valve reciprocation) supports repeated inspection cycles

Our Company Strength

Highlight specializes in pressure testing equipment and fluid control testing systems, supporting standard models and project-based configurations:

16+ years focused on pressure testing equipment and pneumatic boosting systems
Annual production capacity: 1000+ sets of equipment
8000+ customers served
Engineering team support for fixture matching, configuration selection, and technical communication
ISO9001-based quality management implementation and stable manufacturing process
Export support experience for international buyers with documentation and technical assistance

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